浮游有孔虫的生物时间学和演化

IF 4.1 3区 地球科学 Q1 PALEONTOLOGY
Paul N. Pearson, Jeremy R. Young, David J. King, Bridget S. Wade
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引用次数: 0

摘要

摘要。Pulleniatina 是现存的浮游有孔虫属,演化于晚中新世。其六个组成形态种(P. primalis、P. praespectablis、P. spectabilis、P. praecursor、P. obliquiloculata、P. finalis)的底部和顶部出现为热带和亚热带深海沉积的相关性提供了一系列或多或少有用的制约因素,其主要卷曲方向的一些显著变化以及大西洋记录中的一个巨大缺口也是如此。自 20 世纪 60 年代开展系统的深海钻探以来,有关这些事件的生物地层学信息已积累了几十年,在此期间,地质年代框架和分类学概念都发生了重大演变。在这里,我们将展示国际大洋发现计划 U1488 号站点的新数据,这些数据记录了 Pulleniatina 从西太平洋暖池区地理范围中心开始的整个进化史。然后,我们采用一致的方法,结合更新的普氏原生动物属进化模型,对全球 183 个已发表的普氏原生动物生物事件进行了修订校准,并就已知的取样误差进行了比较。我们对各种生物事件的可靠性、其可能的非同步程度以及产生这些事件的进化、扩散和灭绝过程进行了评论。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Biochronology and evolution of Pulleniatina (planktonic foraminifera)
Abstract. Pulleniatina is an extant genus of planktonic foraminifera that evolved in the late Miocene. The bottom and top occurrences of its six constituent morphospecies (P. primalis, P. praespectablis, P. spectabilis, P. praecursor, P. obliquiloculata, P. finalis) provide a series of more or less useful constraints for correlating tropical and subtropical deep-sea deposits, as do some prominent changes in its dominant coiling direction and a substantial gap in its record in the Atlantic Ocean. Biostratigraphic information about these events has accumulated over many decades since the development of systematic deep-sea drilling in the 1960s, during which time the geochronological framework has evolved substantially, as have taxonomic concepts. Here we present new data on the biochronology of Pulleniatina from International Ocean Discovery Program Site U1488, which has a record of its entire evolutionary history from the centre of its geographic range in the Western Pacific Warm Pool. We then present and compare revised calibrations of 183 published Pulleniatina bioevents worldwide, with stated sampling errors as far as they are known, using a consistent methodology and in the context of an updated evolutionary model for the genus. We comment on the reliability of the various bioevents; their likely level of diachrony; and the processes of evolution, dispersal, and extinction that produced them.
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来源期刊
Journal of Micropalaeontology
Journal of Micropalaeontology 生物-古生物学
CiteScore
4.30
自引率
5.00%
发文量
7
审稿时长
>12 weeks
期刊介绍: The Journal of Micropalaeontology (JM) is an established international journal covering all aspects of microfossils and their application to both applied studies and basic research. In particular we welcome submissions relating to microfossils and their application to palaeoceanography, palaeoclimatology, palaeobiology, evolution, taxonomy, environmental change and molecular phylogeny.
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